Woven pile fabric.



No; 760,985. vPATENTBD MAY 24, 1904.-

1 H. HARDWIGK. WOVEN PILE FABRIC.

APPLICATION FILED ROV.17, 1903. N0 HODBL.

UNITED STATES Patented May 24, 1904.

PATENT OFFICE,

HARRY HARDVVIOK, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO IVINS, DIETZ AND METZGER COMPANY, OF PHILADELPHIA, PENNSYL- VANIA, A CORPORATION OF PENNSYLVANIA.

WOVEN P ILE FABRIC.

SPECIFICATION forming part of Letters Patent No. 760,985, dated May 24, 1904.

Application filed November 1'7, 1903. Serial No. 181,529. (No model.)

To all whom t may concern:

Be it known that I, HARRY HARDWIGK, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Woven Pile Fabrics, of which the following is a specification.

My invention relates to that class of pile fabrics in which both cut and uncut pile-loops are employed, the object of my invention be- 1o ing to so weave suchafabric that certain loops will be cut by the withdrawal ofthe pile-wires without cutting other loops formed over the same wires.

In the accompanying drawings, Eigure 1 I5 represents a face View of a piece of fabric made in accordance with my invention. Fig. 2 represents an enlarged sectional view of the same, taken in the direction of the warp-threads, partly on the line a a and partly on the line b 2o b, Fig. 1. Fig. 3 represents the first step in the weaving of the fabric. Fig. 4 represents a further step. whereby certain of the pileloops are cut, and Fig. 5 illustrates a modified method of accomplishing this result.

In carrying out my invention I may employ any desired form of backing fabric, into which the pile-forming warp-threads are tied, and I can use any ordinary form of pile-loom for` weaving the fabric, since no change is needed in the mechanism for inserting and withdrawing the pile-wires or in any other part of the loom, except a slight changeJ in the jacquard mechanism used for shedding the pile-forming warp-threads.

In the drawings I have shown a fabric having a backing composed of weft-threads 1 and 2, stuffer warp-threads 3, andvbinding warpthreads 4 and 5, cut pile-tufts 6 being tied into this backing fabric by each of the weft-threads 1 on the upper surface of said backing; but

the uncut pile-loops 7 being bound to the backing by only every other one of said weftthreads 1, so that while a row of cut pile-tufts is bound into the backing fabric wherever an uncut pile-loop is thus bound, there are rows of cut pile-tufts separately tied into the backing fabric between such common tying-points. Hence wherever in the fabric there are uncut pile-loops and cut pile-tufts lying in the same posed with respect to the loops 61 and 7 that as said pile-wire is withdrawn the knife will cut the loops 6, formed over the single wires, but will not cut the loops 7, formed over the group of adjoining wires. This may be effected by providing each pile-wire with a laterally-acting knife 9, as shown, for instance, in Fig. 4, or by providing the wire with a top knife 10, suchas is shown in Fig. 5, and with a lateral projection 11 adjacent to said knife, so that as the wire is withdrawn the loops formed over the single wires will be tightened on the wires at the approach of the knife and will be severed by the latter, the loops formed over the groups of wires being freed from such tightening iniiuence, and consequently remaining uncut as the knife is drawn through them, or other forms of wire may be devised which will serve to cut the loops which are drawn over the single wires, but which fail to cut the longer and looser loops drawn over the pairs or groups of wires.

My invention is distinct from that class of fabrics in which alternate rows of cut and uncut pile are produced by looping pile-threads first over plain wires and then over wires provided with cutting-knives, since in my improved fabric rows of cut tufts and uncut `pile-loops lie in the same transverse plane.

My invention is also distinct from that class of fabrics in which the rows of pile-tufts are produced by forming their loops over pilewires higher than those which form the uncut pile-loops and then shearing'oif the tops of these pile-loops, for in that case also there is an alternation of cut and uncut pile-tufts and the cut pile-tufts are higher than the uncut pile-1oops, whereas in my fabric the cut piletufts. and the uncut pile-loops are all of the same or substantially the same height.

Having thus described my invention, I claim and desire to secure by Letters Patent 1. A pile fabric having cut and uncut pile and having the uncut pile-loops tied into the backing fabric at less frequent intervals than the cut pile-tufts, substantially as specified.

2. A pile fabric having rows of cut pile-tufts tied into the backing fabric in line with the tying-points of the uncut pile-loops, and one or more rows of cut pile-tufts separately tied into the backing fabric between such common tying-points, substantially as specified.

3. A pile fabric having cut pile-tufts and uncut pile-loops in the Vsame transverse plane, an uncut pile-loop extending longitudinally over a distance equal to two or more rows of cut pile-tufts, substantially as specified.

4. A pile fabric having cut and uncut pile of substantially the same height and having the uncut pile-loops tied into the backing fabric at less frequent intervals than the cut piletufts, substantially7 as specified.

being tied separately into the backing fabric between such common tying-points, substantially as specified.

6. A pile fabric having cut pile-tufts and uncut pile-loops of substantially the same height and in the same transverse plane, an uncut pile-loop extending longitudinally over a distance equal to two or more rows of cut piletufts, substantially as specified.

7 The mode herein described of producing a fabric with combined cut and uncut pile-surface, said mode consisting in forming the loops which are to be uncut over a greater number of wires than the loops which are to be cut, and then cutting the latter loops by withdrawing the wires over which they are formed, substantially as specified.

8. The mode herein described of producing a fabric with combined out and uncut pile, said mode consisting in forming over a series of successive wires the loops which are not to be cut and over single wires the loops which are to be cut and then cutting the latter loops by withdrawing the wires lover which they are formed, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HARRY HARDVVIGK..

Witnesses:

HENRY NoAR, Jos. H. KLEIN. 

